Deciphering the unusual fluorescence in weakly coupled bis-nitro-pyrrolo[3,2-b]pyrroles

Deciphering the unusual fluorescence in weakly coupled bis-nitro-pyrrolo[3,2-b]pyrroles

Owing to their electron-withdrawing nature, nitro-groups are desirable in the design of electron-deficient light-sensitizing aromatic π-conjugated molecules, but most nitro-aromatics are not fluorescent. Here, the authors show how balanced donor-acceptor coupling ensures fast radiative deactivation...

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Bibliographic Details
Main Authors: Yevgen M. Poronik, Glib V. Baryshnikov, Irena Deperasińska, Eli M. Espinoza, John A. Clark, Hans Ågren, Daniel T. Gryko, Valentine I. Vullev
Format: Article
Language:English
Published: Nature Publishing Group 2020-12-01
Series:Communications Chemistry
Online Access:https://doi.org/10.1038/s42004-020-00434-6
Description
Summary:Owing to their electron-withdrawing nature, nitro-groups are desirable in the design of electron-deficient light-sensitizing aromatic π-conjugated molecules, but most nitro-aromatics are not fluorescent. Here, the authors show how balanced donor-acceptor coupling ensures fast radiative deactivation and slow intersystem crossing in bis-nitrotetraphenylpyrrolopyrroles.
ISSN:2399-3669

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